Oh boy, the KPT vortex.
You have the big names (e.g. Alps, Himake, Tai-Hao), and then all the little names like Keypot (KPT), Podworld, Micronorth and so many other companies that made a few products and then vanished; many left only their initials (GA, TEC, ATW in particular). Those KPT-style switches (a combination derivative of SMK (contact mechanism) and Tai-Hao Aruz (shell)) were made in a load of different variants with a load of equally meaningless names and numbers written on them.
The KPT/TEC page referenced above should indicate the odds of ever figuring this out. Interestingly, though, that one above is indeed Podworld, which is curious. It may be that Podworld were the switch OEM, since they made a lot of these keyboards.
Two more versions of the Podworld 292, with the same switches, but marked differently:
http://geekhack.org/index.php?topic=11248.0http://geekhack.org/index.php?topic=7073.0I would have to find out who made the keyboards with the other non-KPT versions in.